A VASTLY improved design, compare to older, relay switched, or Y cabled ADD2PSU devices. Opto Isolated protection, no electrical shorting (sticking/sluggish relay) is possible with this adapter! This SAFE unit features 100% solid state design, opto isolation, no Electomagnetic Interference (EMI) or relay chatter (switch bounce) to hammer & wear down your expensive PSUs or GPUs.****

Also features up to 10,000 times faster operation (yes, ten thousand!) than 'old tech' relay based solutions for true Synchronous PSU startup and hence minimized GPU glitching.

• Requires no extra Molex or SATA power connectors, uses ONLY the PC MoBo LED power to drive the circuit!
• Comes with supplied jumpers wires for plug and play.
• Creates no waste heat, unlike a continually powered relay unit.
• Offers dual LED status for Standby Power and Main power for the linked PSU!. Know if it's working at a glance, on or off!
• Daisy chain-able via the 2 pin jumpers.
• 4-40 hardware mounting x 4 with included machine screws and included plastic circuit board insulating shield as shown.
• Just 2.5" x 1.5" in size, fits anywhere.
• MTBF exceeding your PC, no breakdowns from cheap Relays sticking or damaging your system with back emf spikes or switch bounce.

Your Mobo and GPUs don't use relays for a reason....reliability, EM compliance and compatibility with immersion cooling! Your Mobos, PSus and GPUs cost thousands, why trust them to a $2.00 'cheapest made device' that adds voltage spikes and switch bounce compromises into your gold certified power train?